Located 440 lightyears from Sol, Ketesh is located in what is known as Devout Induction to Covenant stellar cartographers and 21 Tauri/Asterope to human astronomers. A small terrestrial world, Ketesh has had a relatively recent history of inhabitation, with two native species evolving sentience - and promptly being wiped out by Sangheili settlers. Their presence is an anomaly few are comfortable trying to solve, and the Sangheili of Ketesh would remain culturally unique until first contact with the Covenant in 2132. With a number of Forerunner relics under the surface, the planet has contributed much to the Covenant's understanding of the Labyrinth Array.